Superheater.



S. MUNSON.

SUPEREBATER.

APPLICATION FILED AUG. 24, 190s.

Patented Magi, 23, 1909.

v //VENTOH f I Q) elfe/z gy JWM rzJo/z/J By r ATTORNEYS 'p To altwmm it may concern:

UNrrED srnrns refinar entren.

SWENEY MUNSON, OF FOWLER, COLORADO.

SUPERHEATER.

Specification of Letters Patent.

Patented March 23, 190e.

Application led. August 24, V1908. Serial 'o. 449,958.

Be it known that 1,- SwnNnY MUNsoN, a citizen vof the United States, anda resident of Fowler; in the county of Otero and State of Colorado, lhave invented anew and linproved Superheater, of which the following is :a full, clear, and exact description.l

This invention relates to certain improvements in superheaters,'.and more particularly-to that type of superheater disclosed in my prior patent,xNo. 861,137, granted Juiy 2s, 1907. t The special object of my 'invention isd to avoid` leakage of steam from the superheater, by eliminating the separate tubes' and the front and rear headers shown in. said patent.

In my present `invention I form the larger section of the superheater of a cast coil pipek forming a zig-zag or circuitous passage, with the minimum number of joints. ln superheaters formed of separate pipes or tubes having their ends threaded into headers, steam is liable to escape at any one of the largenumber of joints should the said joint become loose through contraction and expansion of the metal underY changes ottemperature, or by a'ar, blow, or undue strain.

Furthermore, the steam in passing through a large number of substantially parallel pipes, travels at a comparatively low rate of speed, Whereas by forming the entire section ofthe superheater of one continuous pipe, the steam is more effectively superheated.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters `of ref- -erence indicate corresponding parts in both views.

, Figure 1 is a longitudinal section through the smoke-box of a boiler having my imroved superheater mount-ed therein; and

ig. 2 is a transverse section through the smoke-box, the major portion of said section bein taken on the line 2-2 of Fig. 1, and the eft-hand ortion of said section being taken on' the line ZH-Q the.. boiler headl an The specific .boiler and. smoke-box illus-v trated in the accompanying drawings is` substantially the same as that illustrated in my prior patent above referred to, andincludes a tubular shell 10 having a boiler head l11 to which the boiler tubes 12 are secured, and having a dry steam pipe 13 in the upper portion of the boiler above the tubes. Thel steam ipe 13 extends through d terminates fina T 14 -cylindersaddle 20.

jhaving ilanges 15 adapted to be secured to the separate sections of the supeiheater.

`Each section of my improved superlieater 'is formed of a single casting 16 so lorined as to provide one continuous conduit arranged in zig-zag or circuit-ous form. 'lhe separate portions of the casting adjacent the bends in the conduit at the front end of lthe smoke'. box are connected together by lugs 17 which serveto support each bend 'upon the one casting at the front end of the smoke-'box is provided with a lug 18 adapted to be received withinV a support 19 rigidly secured to' the wall of the smoke-box. ,The casting .at the upper end of the conduit is rigidlylbolted tothe corres ending flange 15 of the.

T 14, while at the ower 'end of the casting the end. of the conduit is rigidly bolted to the of the-conduit, said conduit may be provided with a smallrecess or projection'l 4Lpon its under side, to which may be connected a conduit 22 leading to the exteriorof the smoke-box and serving to drawv off any Water condensing within thc superheater, substantially as shown in my previous patent.'V The separate bends at lthe rea" end of the superheater are connecter1 together .and held rigid in respect lto each other by a .portion of the smoke therethrough.

The steam escape nozzle 25 is preferably extended to a considerably greater height than the nozzle shown in my previous patent, and l eliminate the pctticoat pipe there shown.

As a convenience in casting, and to permit` of the removal of the cores from the interior of the conduit, the latter at each of the bends at the rear end, may, if desired, be provided with a threaded aperture closed by a suitable plug 26 after the core has been removed. These plugsmay if desired, be `removed to facilitate the cleaning of the interior of the conduit.

This superlieater can also be used in stationary boilers by making the superheating Adjacent the 'lower end below. l One ofthe lowermost bends' of the Casting-'16 Conform to the shape of the smoke box or chamber, be it square or round, and by providing a iiange cast on each end 15 to which the steani pipe that comes from the doineol' the boiler and the one that goes to the engine may be connected. In stationary boilers, it will only be necessary to use.

one casting 16, and of course it is obvious that the casting can be made in any number of shapes desirable and still not depart froni the spirit of the invention as shown in the drawing. y

AHaving thus described my invention,` I claini as new, and desireto secure by Letters Patent:

1. A superlieater, comprising similarsections spaced apart, each ot'said sections cornprising a single coil of cast pipe, the bends of the coil ,adjacent one end thereof being spaced apart and supported by lugs integral therewith, and the separate bends adjacent -the opposite end being supported and spaced apart by a perforated web integral therewith.

2. In a device of the,characterdescribed,

the combination of a pair of superheating sections secured in the smoke box, one on sn1oke-box, Jneans connecting said pi es in\30 series to torni a continuous channe and Webs integral with the said connecting means at the 'ends of said pipes adjacent the 'Huesheet extending transversely of said an spaces, suitable connection 'for passing steam through said sections7 and a baffle extending transversely of the smoke-box between the rear ends of said sections and coacting with their webs to prevent the gases of. combustion entering the smoke-box through the line-sheet from passing directly and freely to the sinol e-stack opening. A

In testimony whereof I have signed ni'y naine to this speciication in the presence of .two subscribing witnesses.

SWENEY MUNsoN.

Witnesses:

F. M. WEILAND, J. S. SoLsETH. 

